13. Applications
RELEX (Failure Rate) (MTBF) BOM RELEX BOM Import RELEX 1.FileNewProject MotherBoard 2. Import BOM Relex FileImport BOM Import BOM BOM RELEX View Map
2. BOM,Import,, System Tree Assembly System System Tree: RelexSystem Tree Assembly System: RelexAssembly System Part Table Part Table
System Tree Part Table part numbercategorysubcategoryquantity System Tree Part Table Calculation Model : Telcordia Issue1 1 Bellcore Bellcore Telcordia Issue1 λ PC, λpc = λgi * * *
λ Gi : i (generic) : : i : i : i : Assembly Calculation Data
Assembly System Calculation Data 2 (Calculation Model) MIL-HDBK-217FN2MIL-HDBK-217FN1 Telcordia Issue6Bellcore Issue6Bellcore Issue5Bellcore Issue4Parts Count FN2Parts Count FN1MechanicalPRISMCENT93HRD5 299B Parts Stress
3 Bellcore (Calculation Method) Telcordia (Bellcore) (Calculation Method) MIL-HDBK-217 Method I IIIII Method IIIIII Method IPart Count Method
Method II Combining Laboratory Data With Part Count Method Method IIIPredictions From Field Tracking
Method III 4Bellcore (Operating Temperature) RELEX (Operating Temperature): 30 C
5 Bellcore (Operating Environment) RELEX (Operating Environment): G B Bellcore GB, GC - Ground Benign, Controlled GF, GU - Ground Fixed, Uncontrolled GM - Ground Mobile AIC, AC - Airborne Inhabit Cargo, Commercial SF, SC - Space Flight, Commercia
G B 1.0 G F 2.0 ( ) G M 6.0 A C 10 G F G M G F A C Sc 15 6Bellcore (Quality Level) Bellcore Level 0Level ILevel IILevel III
Bellcore Quality Level Level 0 Level I Level II Level III (a) (b) I (a)(b) (c) ( ) (AQLsDPMs )(d) (e) AQLsDPMs I II (a)(e) (f) (g) 100% ( ) ( ) (h) ( percent defective allowed, PDA) 2%(i) 7MIL-217 MIL-217 Failure rate= λp = λ b ** **** * λb: Environment factor
:(Quality factor) :(Application factor) :(Quality factor) :(Learning factor) :(Electrical Stress factor) :(Temperature factor) 8 MIL-217 (Calculation Model) MIL-HDBK-217FN2MIL-HDBK-217FN1 Telcordia Issue6Bellcore Issue6Bellcore Issue5Bellcore Issue4Parts Count FN2Parts Count FN1MechanicalPRISMCENT93HRD5299B Parts Stress MIL-217, Calculation Model MIL-217
9 MIL-217 (Calculation Method) Telcordia (Bellcore) (Calculation Method) MIL-HDBK-217 Method I IIIII 10MIL-217 (Operating Temperature) RELEX (Operating Temperature): 30 C
11 MIL-217 (Operating Environment) RELEX (Operating Environment): G B MIL-217 GB, GC - Ground Benign, Controlled GF, GU - Ground Fixed, Uncontrolled GM - Ground Mobile NS - Naval Sheltered NU - Naval Unsheltered AIC, AC - Airborne Inhabit Cargo, Commercial AIF - Airborne Inhabit Fighter AUC - Airborne Uninhab Cargo AUF - Airborne Uninhab Fighter ARW - Airborne Rotary Winged SF, SC - Space Flight, Commercial MF - Missile Flight ML - Missile Launch CL - Cannon Launch
G B G F G M N S N U A IC A IF
A UC A UF A RW S F M F M L C L 12MIL-217 (Quality Level): MIL-217
MIL-217,, : Microelectronics Semiconductors Capacitors Resistors S,S-1,B,B-1,B-2,D,D-1 JANTXV,JANTX,JAN D,C,S,R,B,P,M,L S,R,P,M